Aprijal, Aprijal, and Djarot Hindarto. “Implementation Unified Modeling Language in the Development E-Mail Application System”. Jutisi : Jurnal Ilmiah Teknik Informatika dan Sistem Informasi 12, no. 3 (December 25, 2023): 1533–1543. Accessed September 1, 2026. https://ojs.stmik-banjarbaru.ac.id/index.php/jutisi/article/view/1740.